CN2686237Y - Radio camera signal blocking device - Google Patents
Radio camera signal blocking device Download PDFInfo
- Publication number
- CN2686237Y CN2686237Y CN 200420019778 CN200420019778U CN2686237Y CN 2686237 Y CN2686237 Y CN 2686237Y CN 200420019778 CN200420019778 CN 200420019778 CN 200420019778 U CN200420019778 U CN 200420019778U CN 2686237 Y CN2686237 Y CN 2686237Y
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- China
- Prior art keywords
- signal
- circuit
- low noise
- frequency source
- power amplification
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- Expired - Fee Related
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Abstract
The utility model discloses a radio camera signal blocking device, which comprises a receiving antenna, a low noise amplifying circuit, a signal detection circuit, a control circuit, a frequency source, a power amplification circuit and a transmitting antenna. The receiving antenna transmits the received signal to the low noise amplifying circuit, and the low noise amplifying circuit transmits it to the signal detection circuit after signal amplification. The signal detection circuit transmits the control signal to the control circuit, and the control circuit controls the output disturbing signal of the frequency source and transmits out the signal after the amplification of the power amplification circuit. The utility model can automatically monitor whether the ATM vicinity is provided with a wireless pinhole camera all day and automatically sends out the radio signal to proceed barrier blocking-up when discovering and stop the normal work of the pinhole camera, which can effectively guarantees the safety of the ATM operation business. The entire course of work full automatically finishes without manual intervention and has the advantages of simple use and convenient installation.
Description
Technical field the utility model relates to a kind of signal blocker, specifically a kind of wireless camera signal interrupter.
Financial business such as deposit and withdraw brings great convenience technical background ATM ATM to credit card.Carry out financial transaction along with people use the ATM ATM more and more, some lawless persons utilize to be installed the case that wireless pinhole camera carries out crime additional and also happens occasionally on the ATM cash dispenser.Their general gimmick is: as shown in Figure 1, near ATM cash dispenser 1, hide a micro radio video camera 2 is installed, the keyboard 3 and the screen 4 of the alignment lens ATM cash dispenser 1 of video camera 2, so, depositor's operating process and displaying contents can both be taken.The offender is in the place of distance A TM cash dispenser 50-300 rice, utilize the radio receiver 5 of configuration and the operation that display 6 just can be watched the depositor, just as on-the-spot broadcasting, stealing depositor's Financial Information unconsciously, duplicating a bank card then and just can steal all funds on depositor's card easily.Because this kind means of crime has very strong disguise and place, the uncertainty of time, thereby banking does not well tackle way yet at present.
The summary of the invention technical problem to be solved in the utility model is to propose a kind ofly can shield blocking-up automatically to the signal of wireless camera; can effectively protect the fail safe of ATM cash dispenser operation transaction; use simply wireless camera signal interrupter easy for installation.
For solving the problems of the technologies described above, the utility model wireless camera signal interrupter comprises reception antenna, low noise amplifier circuit, signal deteching circuit, control circuit, frequency source, power amplification circuit and transmitting antenna, described reception antenna is transported to described low noise amplifier circuit with the signal that receives, described low noise amplifier circuit is transported to described signal deteching circuit after signal is amplified, described signal deteching circuit sends a control signal to described control circuit, described control circuit is controlled described frequency source, described frequency source output interference signal is gone out by transmission antennas transmit after power amplification circuit amplifies.
Above-mentioned wireless camera signal interrupter, described power amplification circuit and transmitting antenna respectively have two covers, link to each other with described frequency source respectively.
The utility model is owing to adopted technique scheme, during use, open working power earlier, the control circuit of block device will control block device in the signal working frequency range of wireless camera repeatedly search have or not wireless camera working signal (in the search procedure, block device is transmitting power not).The small-signal that reception antenna receives is after low noise amplifier circuit amplifies, deliver to signal deteching circuit and differentiate whether there is the wireless camera working signal, if, then measure parameters such as its centre frequency, a kind of interference signal close with the wireless camera signal properties sent in control circuit control frequency source then, after amplifying, power amplification circuit goes out by transmission antennas transmit, make the receiver screen of wireless camera a slice clause or snowflake occur, can't normally receive the signal that video camera sends.Thereby; the utility model wireless camera signal interrupter has or not wireless pinhole camera to exist near adopting round-the-clock monitoring ATM cash dispenser; and when finding, send radio signal automatically it is shielded blocking-up; make the method for work that wireless camera can't operate as normal; protected the password of depositor's credit card; the sorrow that the depositor is not had give away secrets, thus the fail safe of ATM cash dispenser operation transaction effectively guaranteed.Entire work process is automatically finished, need not manual intervention, and have and use advantage simple, easy for installation.In addition, the two cover power amplifications, the launching circuit that adopt in the utility model signal interrupter can detect blocking-up to all signals in the 3GHz frequency range exactly, thereby can shield blocking-up to the behavior of stealing secret information of all wireless cameras.
Description of drawings is described in further detail the utility model below in conjunction with drawings and embodiments.
Fig. 1 is the view of existing wireless pinhole camera when installing and using on the ATM cash dispenser;
Fig. 2 is the operation principle and the circuit block diagram of the utility model wireless camera signal interrupter.
Execution mode as shown in Figure 2, the wireless camera signal interrupter comprises reception antenna T1, low noise amplifier circuit, signal deteching circuit, control circuit, frequency source, power amplification circuit 1, power amplification circuit 2 and two transmitting antenna T2, reception antenna T1 transports to low noise amplifier circuit with the signal that receives, signal is transported to signal deteching circuit after low noise amplifier circuit amplifies, whether there is the wireless camera working signal to differentiate, if, then measure the parameters such as centre frequency of wireless camera working signal, and send a control signal to control circuit.The control signal that frequency source sends according to control circuit; export corresponding interference signal; and after power amplification circuit 1 or power amplification circuit 2 amplifications, launch by transmitting antenna T2; working signal to wireless camera shields; disturb its operate as normal, the transaction security of protection ATM cash dispenser.Every main performance index of the utility model wireless camera signal interrupter is as follows: 1, working frequency range: all channels (100MHz-3GHz) of wireless camera work; 2, to the pinhole camera scope of investigation: effective radius is not less than 3m; 3, EFFECTIVE RANGE (destruction receiving range): be not less than 300 meters; 4, power supply: 220VAC ± 20%, 50/60Hz, (less than 5W).Each circuit that is adopted in the utility model signal interrupter is basic identical with the common homogeneous circuit of realizing said function respectively, repeats no more herein.
Claims (2)
1, the wireless camera signal interrupter, it is characterized in that, it comprises reception antenna, low noise amplifier circuit, signal deteching circuit, control circuit, frequency source, power amplification circuit and transmitting antenna, described reception antenna is transported to described low noise amplifier circuit with the signal that receives, described low noise amplifier circuit is transported to described signal deteching circuit after signal is amplified, described signal deteching circuit sends a control signal to described control circuit, described control circuit is controlled described frequency source, described frequency source output interference signal is gone out by described transmission antennas transmit after described power amplification circuit amplifies.
2, wireless camera signal interrupter as claimed in claim 1 is characterized in that, described power amplification circuit and transmitting antenna respectively have two covers, links to each other with described frequency source respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420019778 CN2686237Y (en) | 2004-01-18 | 2004-01-18 | Radio camera signal blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420019778 CN2686237Y (en) | 2004-01-18 | 2004-01-18 | Radio camera signal blocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2686237Y true CN2686237Y (en) | 2005-03-16 |
Family
ID=34669190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420019778 Expired - Fee Related CN2686237Y (en) | 2004-01-18 | 2004-01-18 | Radio camera signal blocking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2686237Y (en) |
-
2004
- 2004-01-18 CN CN 200420019778 patent/CN2686237Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Designer after: Zou Shaocheng Designer after: Luo Hongbo Designer before: Ma Hailong Designer before: Lai Youchuan Designer before: Luo Hongbo |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: DESIGNER; FROM: MA HAILONG LAI YOUZHUAN LUO HONGBO TO: ZOU SHAOCHENG LUO HONGBO |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |